Information
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Patent Grant
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6749265
-
Patent Number
6,749,265
-
Date Filed
Wednesday, April 30, 200321 years ago
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Date Issued
Tuesday, June 15, 200420 years ago
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Inventors
-
Original Assignees
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Examiners
- Cuomo; Peter M.
- Burnham; Sarah C.
Agents
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CPC
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US Classifications
Field of Search
US
- 297 4401
- 297 44014
- 297 44022
- 297 44023
- 297 44024
- 108 15716
- 108 1571
- 248 1881
- 248 188
- 248 1888
- 248 165
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International Classifications
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Abstract
A seat of a chair is provided with a plastic main body, a metallic upper cover joined to upper and annular sides of the main body, and a metallic lower cover securely disposed over the bottom of the main body. The metallic covers increase the strength of the seat. The bottom of the plastic main body is formed with vertical connecting tubes, which are tightly fitted around corresponding sleeves secured to upper ends of metallic legs of the chair. The tubes have inner annular protrusions, which are engaged with annular grooves formed on outer sides of the sleeves; and, the seat matches the metallic legs to a greater degree because the outer side of the seat is made of metal.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement on a seat of a metallic chair, more particularly one, which is formed with a structure different from seats of those chairs that have similar usages so as to emit feeling of quality.
2. Brief Description of the Prior Art
Research and design have been made to provide improvements on various existent tools and house furniture to better quality of life for people. In other words, tools, house furniture etc. have to be made with pleasant appearance and feeling of quality besides the practical aspects. Common conventional stools consist of a metallic support, and a plastic seat. Because the seat is made of plastics, different from the metallic material of the support, it doesn't match the support well. Consequently, appearance of the chair isn't attractive, and is lack of feeling of quality.
SUMMARY OF THE INVENTION
It is a main object of the present invention to provide a metallic shell to a seat for making the seat match metallic legs of chairs.
A metallic upper cover is joined to upper and annular sides of a plastic main body of the seat, and a metallic lower cover is securely disposed over the bottom of the main body; the bottom of the plastic main body is formed with vertical connecting tubes, which are passed through corresponding ones of holes of the lower cover, and tightly fitted around corresponding ones of sleeves secured to upper ends of metallic legs of the chair.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be better understood by referring to the accompanying drawings, wherein:
FIG. 1
is an exploded perspective view of a chair with the seat according to the present invention,
FIG. 2
is an exploded perspective view of the seat according to the present invention,
FIG. 3
is a perspective view of the chair with the seat according to the present invention,
FIG. 4
is a partial cross-sectional view of the chair with the seat according to the present invention, and
FIG. 5
is a partial and enlarged cross-sectional view of the chair with the seat according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to
FIG. 1
, a preferred embodiment of a chair in the present invention includes a metallic support
1
, and a seat
2
; the support
1
consists of at least three legs, and connecting elements
12
joining the legs together; plastic fastening sleeves
13
, which are formed with annular grooves
131
on outer sides, are passed around upper ends of the legs; the seat
2
is comprised of a main body
21
, a metallic upper cover
22
, and a metallic lower cover
23
.
Referring to
FIG. 2
, the main body
21
of the seat
2
has a middle portion
211
, and an annular portion
212
projecting downwards from the edge of the middle portion
211
; the annular portion
212
is preferably shaped such that a vertical cross-sectional view thereof is convexly curved on the outward side. The main body
21
has several strengthening portions
213
, which project down from the bottom of the middle portion
211
, and which forms several circles. The main body
21
has strengthening ribs
214
, which project down from the bottom of the middle portion
211
, and which forms a radial pattern. The main body
21
has connecting tubes
215
, which project down from the bottom of the middle portion
211
, and which are formed at locations corresponding to the upper ends of the legs. In addition, each connecting tube
215
has an annular protrusion
2151
on an inner side. The main body
21
further has connecting posts
216
near to the connecting tubes
215
on the bottom thereof; each post
216
has a longitudinal screw hole; the connecting tubes
215
, and the posts
216
are preferably joined to the strengthening portions
213
to be steadier.
The upper cover
22
of the seat
2
is shaped so as to be capable of fitting over the upper side of the main body
21
, and has an annular portion
222
, which extends beyond lower end of the annular portion
212
of the main body
21
when the cover
22
is joined to the main body
21
.
The lower cover
23
is generally flat; the edge of the lower cover
23
is shaped so as to be over the bottom of the main body
21
when the cover
23
and the main body
21
are joined together. The lower cover
23
has connecting holes
231
, and through holes
233
formed at locations corresponding to the connecting tubes
215
, and the connecting posts
216
respectively. Annular projections
232
are formed around the connecting holes
231
on the bottom of the lower cover
23
.
In combination, referring to
FIGS. 3
, and
4
, the upper and the lower covers
22
,
23
are respectively fitted over the upper, and the lower sides of the main body
21
, and the connecting tubes
215
are closely passed through corresponding connecting holes
231
of the lower cover
23
. Then, screws
234
are passed through the through holes
233
, and screwed into the screw holes of the connecting posts
216
so that the lower cover
23
is securely joined to the main body
21
. And, the annular portion
222
of the upper cover
22
is folded to contact and engage the edge of the bottom of the lower cover
23
at those portions that project beyond the lower end of the annular portion
212
of the main body
21
; thus, the upper cover
22
is securely joined to the main body
21
. The seat
2
is securely joined to the support
1
with the connecting tubes
215
being closely passed around corresponding fastening sleeves
13
at the upper ends of the legs, and with the inner annular protrusions
2151
of the tubes
215
being engaged with the outer annular grooves
13
of the sleeves
12
.
From the above description, it can be easily understood that the seat of a chair in the present invention has advantages as followings:
1. The seat has the metallic upper and lower covers
22
,
23
forming the outer side thereof it can match the metallic support
1
to make the chair have more pleasant appearance.
2. The annular projections
232
of the lower cover
23
are mounted around the connecting tubes
215
of the main body
21
therefore strength of the tubes
215
increases, and in turns, the tubes
215
can't break even if relatively heavy load is on the chair.
3. The seat can be easily fitted to the appropriate location of the legs of the support
1
, and is very steady with the inner annular protrusions
2151
of the tubes
215
being engaged with the outer annular grooves
13
of the sleeves
12
.
Claims
- 1. A seat of a metallic chair, comprising:a main body having a plurality of connecting tubes projecting downwards from a bottom thereof; each connecting tube having an annular protrusion formed on an inner side; a metallic upper cover joined to the main body; the upper cover being shaped to extend over and substantially envelop upper and annular sides of the main body; and, a metallic lower cover disposed to extend across the bottom of the main body, the main body being thereby sandwiched between the metallic upper and lower covers; the lower cover having connecting holes formed at locations corresponding to the connecting tubes of the main body; annular projections being formed around the connecting holes on a bottom of the lower cover; the lower cover being joined to the main body with the annular projections being closely fitted around corresponding ones of the connecting tubes; the connecting tubes being closely fitted around corresponding ones of sleeves secured to upper ends of legs of a chair with the annular protrusions being engaged with annular grooves formed on outer sides of the sleeves.
- 2. The seat of a metallic chair as claimed in claim 1, wherein the main body is formed with strengthening portions and strengthening ribs on the bottom thereof.
- 3. The seat of a metallic chair as claimed in claim 1, wherein the upper cover is folded to contact and engage an edge of a bottom of the lower cover at those portions thereof that project downwards beyond a lower edge of the main body.
- 4. The seat of a metallic chair as claimed in claim 1, wherein the main body has a plurality of connecting posts, each of which has a longitudinal screw hole, near to the connecting tubes thereof, and the lower cover has connecting holes formed at locations corresponding to the connecting posts; screws being passed through a through holes and screwed into the connecting posts to secure the lower cover to the main body.
US Referenced Citations (12)